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computers / alt.sys.pdp11 / Re: RT11 SHOW DEVICES command

SubjectAuthor
* RT11 SHOW DEVICES commandLee Gleason
`* Re: RT11 SHOW DEVICES commandJohnny Billquist
 `* Re: RT11 SHOW DEVICES commandDon Baccus
  `- Re: RT11 SHOW DEVICES commandJerry Weiss

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RT11 SHOW DEVICES command

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From: lee.glea...@comcast.net (Lee Gleason)
Subject: RT11 SHOW DEVICES command
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 by: Lee Gleason - Tue, 1 Mar 2022 22:31 UTC

I'm looking at RT-11 on a small system here, thinking about using it
for TU58 projects.This system has a DL-like device at the right address
to control a TU58, with no TU58 attached (for now). The DD handler
doesn't load at boot (I didn't expect it to, since the TU58 is missing).
I thought I'd try loading it manually and see what happens. The LOAD
command succeeds. When I do a SHOW DEVICES command, it looks like this.

..SHOW DEV

Device Status CSR Vector(s)
------ ------ --- ---------
DY Not installed 177170 264
DL Not installed 174400 160
DU Installed 172150 154
LD Installed 000000 000
SL Installed 000000 000
VM Not installed 177572 250
RK Not installed 177400 220
DM Not installed 177440 210
DD 143506 176500 300 304
LP Installed 177514 200
LS Installed 176500 300 304
and so on for the rest of the devs.

I was wondering, does it mean anything in particular when the output
for the DD device lists its load address, instead of one of the text
statues (Installed, Resident, etc)?

--
Lee K. Gleason N5ZMR
Control-G Consltants
lee.gleason@comcast.net

Re: RT11 SHOW DEVICES command

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From: bqt...@softjar.se (Johnny Billquist)
Newsgroups: alt.sys.pdp11
Subject: Re: RT11 SHOW DEVICES command
Date: Wed, 2 Mar 2022 13:56:15 +0100
Organization: MGT Consulting
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 by: Johnny Billquist - Wed, 2 Mar 2022 12:56 UTC

On 2022-03-01 23:31, Lee Gleason wrote:
>
>   I'm looking at RT-11 on a small system here, thinking about using it
> for TU58 projects.This system has a DL-like device at the right address
> to control a TU58, with no TU58 attached (for now). The DD handler
> doesn't load at boot (I didn't expect it to, since the TU58 is missing).
> I thought I'd try loading it manually and see what happens. The LOAD
> command succeeds. When I do a SHOW DEVICES command, it looks like this.
>
> .SHOW DEV
>
> Device    Status          CSR     Vector(s)
> ------    ------          ---     ---------
>   DY      Not installed  177170   264
>   DL      Not installed  174400   160
>   DU      Installed      172150   154
>   LD      Installed      000000   000
>   SL      Installed      000000   000
>   VM      Not installed  177572   250
>   RK      Not installed  177400   220
>   DM      Not installed  177440   210
>   DD      143506         176500   300 304
>   LP      Installed      177514   200
>   LS      Installed      176500   300 304
>   and so on for the rest of the devs.
>
>   I was wondering, does it mean anything in particular when the output
> for the DD device lists its load address, instead of one of the text
> statues (Installed, Resident, etc)?

Not sure what it means, but you have both DD and LS installed, and both
use the same CSRs and vectors. That can never end well...

Johnny

Re: RT11 SHOW DEVICES command

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Subject: Re: RT11 SHOW DEVICES command
From: dhog...@gmail.com (Don Baccus)
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 by: Don Baccus - Wed, 2 Mar 2022 22:23 UTC

On Wednesday, March 2, 2022 at 4:56:16 AM UTC-8, Johnny Billquist wrote:
> On 2022-03-01 23:31, Lee Gleason wrote:
> >
> > I'm looking at RT-11 on a small system here, thinking about using it
> > for TU58 projects.This system has a DL-like device at the right address
> > to control a TU58, with no TU58 attached (for now). The DD handler
> > doesn't load at boot (I didn't expect it to, since the TU58 is missing)..
> > I thought I'd try loading it manually and see what happens. The LOAD
> > command succeeds. When I do a SHOW DEVICES command, it looks like this.
> >
> > .SHOW DEV
> >
> > Device Status CSR Vector(s)
> > ------ ------ --- ---------
> > DY Not installed 177170 264
> > DL Not installed 174400 160
> > DU Installed 172150 154
> > LD Installed 000000 000
> > SL Installed 000000 000
> > VM Not installed 177572 250
> > RK Not installed 177400 220
> > DM Not installed 177440 210
> > DD 143506 176500 300 304
> > LP Installed 177514 200
> > LS Installed 176500 300 304
> > and so on for the rest of the devs.
> >
> > I was wondering, does it mean anything in particular when the output
> > for the DD device lists its load address, instead of one of the text
> > statues (Installed, Resident, etc)?
> Not sure what it means, but you have both DD and LS installed, and both
> use the same CSRs and vectors. That can never end well...
>
> Johnny

Ah, I assume that since LS uses the same CSR and vectors and is known to RT-11, that the DD device is just listed with its install address for the status. Poking at the documentation says that this is one possibility for the status field but doesn't say when it will do it, but I think you've found out.

Re: RT11 SHOW DEVICES command

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Subject: Re: RT11 SHOW DEVICES command
From: jsw...@ieee.org (Jerry Weiss)
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 by: Jerry Weiss - Wed, 2 Mar 2022 23:00 UTC

On Wednesday, March 2, 2022 at 4:23:45 PM UTC-6, dho...@gmail.com wrote:
> On Wednesday, March 2, 2022 at 4:56:16 AM UTC-8, Johnny Billquist wrote:
> > On 2022-03-01 23:31, Lee Gleason wrote:
> > >
> > > I'm looking at RT-11 on a small system here, thinking about using it
> > > for TU58 projects.This system has a DL-like device at the right address
> > > to control a TU58, with no TU58 attached (for now). The DD handler
> > > doesn't load at boot (I didn't expect it to, since the TU58 is missing).
> > > I thought I'd try loading it manually and see what happens. The LOAD
> > > command succeeds. When I do a SHOW DEVICES command, it looks like this.
> > >
> > > .SHOW DEV
> > >
> > > Device Status CSR Vector(s)
> > > ------ ------ --- ---------
> > > DY Not installed 177170 264
> > > DL Not installed 174400 160
> > > DU Installed 172150 154
> > > LD Installed 000000 000
> > > SL Installed 000000 000
> > > VM Not installed 177572 250
> > > RK Not installed 177400 220
> > > DM Not installed 177440 210
> > > DD 143506 176500 300 304
> > > LP Installed 177514 200
> > > LS Installed 176500 300 304
> > > and so on for the rest of the devs.
> > >
> > > I was wondering, does it mean anything in particular when the output
> > > for the DD device lists its load address, instead of one of the text
> > > statues (Installed, Resident, etc)?
> > Not sure what it means, but you have both DD and LS installed, and both
> > use the same CSRs and vectors. That can never end well...
> >
> > Johnny
> Ah, I assume that since LS uses the same CSR and vectors and is known to RT-11, that the DD device is just listed with its install address for the status. Poking at the documentation says that this is one possibility for the status field but doesn't say when it will do it, but I think you've found out.

For serial devices like this, you can just load the handler that matches the device plugged into a serial port. I have plotters, printers and TU58 swapped around on identical and/or different CSR/Vectors. It is up to you to keep it straight. The status bits give information on the type of device (disk, read only, serial, etc..) and other functionality the loaded handler can support. Look for RT–11 Device Handlers Manual AA–PE7VA–TC

Jerry

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